ONE-ATOM POINT CONTACTS

被引：327

作者：

KRANS, JM ^{[1
]}

MULLER, CJ ^{[1
]}

YANSON, IK ^{[1
]}

GOVAERT, TCM ^{[1
]}

HESPER, R ^{[1
]}

VANRUITENBEEK, JM ^{[1
]}

机构：

[1] VERKIN LOW TEMP PHYS & ENGN INST, KHARKOV 310164, UKRAINE

来源：

PHYSICAL REVIEW B | 1993年 / 48卷 / 19期

关键词：

D O I：

10.1103/PhysRevB.48.14721

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A mechanically controllable break junction is used to study the transition between vacuum tunneling and contact for three different metals. In the tunnel regime a faster-than-exponential behavior is seen at close distances, followed by a jump to contact, both interpreted as being due to metal bonding forces. We show that stable contacts of a single atom can be formed. For Cu, the conductance value for a one-atom contact is very close to 2e2/h. For Al this value is less well defined but of similar magnitude, while for Pt it is noticeably higher, implying that the electronic structure of the atoms is relevant to the one-atom conduction process.

引用

页码：14721 / 14724

页数：4

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